Patent GB-1162165-A (GB)
Title: Improvements in or relating to the Manufacture of Shoes
IPC: A43D25/08
Filed: 1966-10-17
Abstract: 1,162,165. Boots &c. BRITISH UNITED SHOE MACHINERY CO. Ltd. 17 Oct., 1966 [18 Oct., 1965], No. 46254/66. Heading A3B. A toe and heel lasting machine comprises a shoe support 34 which positions the toe end of the shoe in a predetermined location, a toe lasting unit 30 which is movable between a retracted position and an operative position, a heel lasting unit 32 which is movable between a retracted position and an operative position and power operated means for moving the units 30 and 32 to their operative position and for operating the units 30 and 32. The shoe support 34 (Figs. 3, 15) consists of a toe rest 94 and last support. The toe rest 94 can be adjusted heightwise by a nut 96 on a column 90 fixed to the machine frame 36. The last or form F is supported by a rib 58 which engages a groove 60 in the form F, the rib 58 being mounted on a block 56 which is slidable lengthwise of the shoe in a bracket 50. The block 56 is positioned by a pin 64 in one of a series of holes 62 so that the toe end of shoes of different sizes will be positioned in the same predetermined location relative to the frame 36. The form F is held in position by clamps 72 which are operated by a piston and cylinder 78. The toe lasting unit 30 (Fig. 2) includes a wiper head 100 which carries toe wipers 152, a toe conforming band 170, a retarder 222, an insole hold down 224 and a pressure member 290. The toe wiper head 100 is supported by links 128 which are pivoted to the wiper head 100 at 126 and to a cross-bar 130. The wiper head 100 can be swung from its retracted position as shown in Fig. 2 to an operative position adjacent the toe of the shoe by a piston and cylinder 106. The wiper head 100 houses toe wipers 152 of the type described in Specification 1,007,775 which are operated by a piston and cylinder 104 and carries a toe conforming band 170 of the type described in Specification 976,625. The retarder 222 is carried by a block 230 which is mounted on parallel links 232, 234 on a bracket 220. The retarder 222 can be swung into operative position by a bell crank lever 236 operated by piston and cylinder 244. The insole hold down 224 is slidable in the block 230 and can be lowered into operative position by a bell crank 262, 264 operated by a piston rod 268. The pressure member 290 is carried by the piston rod 286 of a piston and cylinder 282 on a bracket 280. The pressure member 290 presses against the insole to cause the wiper head to move upwards and perform an unwiping operation. The cross-bar 130 is connected to the piston rod 132 of a piston and cylinder 136 which, when actuated, causes the wipers 152 to apply bedding pressure. The heel lasting unit 32 (Fig. 3) consists of a heel wiper head 400 which houses heel end wipers (422), heel side wipers 424 and a heel band 452 of the type described in Specification 1,034,662. The wiper head 400 is pivoted to lugs 404 on a carriage 406 which can move lengthwise of the shoe on rollers 470 by means of piston and cylinder 482 to move the wiper head 400 from its retracted position as shown to an operative position adjacent the heel end of the shoe. The wiper head 400 is supported resiliently by a spring 500 and can be moved downwardly to apply bedding pressure by a piston and cylinder 520. The machine has an automatic pneumatic control circuit which operates as follows:-the operator places the form F on the shoe support 34 which has been adjusted lengthwise according to the size of the shoe and operates a start valve 600. The clamps 72 then clamp the form F in position and the toe and heel wiper heads 100 and 400 move to their operative positions. The distributer 222 and insole hold-down 224 are then lowered to press the lasting margin against the toe wipers 152 and to press the insole against the form F. The toe band 170 then closes about the shoe and the pressure member 290 is lowered so that the toe wipers 152 and toe band 170 perform an upwiping operation. The toe wipers 152 and heel wipers (422), 424 then perform their inwiping action, the distributer 222 and insole hold down 224 being raised out of the path of the wipers 152 and the toe band 170 being retracted. At the end of the inwiping operations bedding pressure is applied by cylinders 136 and 520 and after a predetermined time lag the various parts return to their initial positions.